Dynamic Sport Viper

Viper
Role	Paraglider
National origin	Poland
Manufacturer	Dynamic Sport
Designer	Wojtek Pierzyński
Status	Production completed
Produced	mid-2000s
Unit cost	€998 (Viper L, 2004)

The Dynamic Sport Viper is a Polish single-place, paraglider that was designed by Wojtek Pierzyński and produced by Dynamic Sport of Kielce. It is now out of production.^[1]

Design and development

The Viper was designed as a competition glider. The models are each named for their relative size.^[1]

Operational history

Reviewer Noel Bertrand described the Viper in a 2003 review as priced very competitively.^[1]

Variants

Viper M

Medium-sized model for mid-weight pilots. Its 12.25 m (40.2 ft) span wing has a wing area of 26.5 m² (285 sq ft), 70 cells and the aspect ratio is 5.56:1. The pilot weight range is 65 to 85 kg (143 to 187 lb).^[1]

Viper L

Large-sized model for heavier pilots. Its 12.8 m (42.0 ft) span wing has a wing area of 28.6 m² (308 sq ft), 73 cells and the aspect ratio is 5.65:1. The pilot weight range is 80 to 100 kg (176 to 220 lb).^[1]

Viper XL

Extra large-sized model for much heavier pilots. Its 13.3 m (43.6 ft) span wing has a wing area of 30.5 m² (328 sq ft), 76 cells and the aspect ratio is 5.71:1. The pilot weight range is 95 to 115 kg (209 to 254 lb).^[1]

Specifications (Viper L)

Data from Bertrand^[1]

General characteristics

• Crew: one
• Wingspan: 12.8 m (42 ft 0 in)
• Wing area: 28.6 m² (308 sq ft)
• Aspect ratio: 5.65:1

Performance

• Maximum speed: 50 km/h (31 mph; 27 kn)
• Rate of sink: 0.9 m/s (180 ft/min)

References

1. Bertrand, Noel; Rene Coulon; et al: World Directory of Leisure Aviation 2003-04, page 15. Pagefast Ltd, Lancaster OK, 2003. ISSN 1368-485X